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Finding the Fourth Proportional to 308.77, 426.10 and 168.89

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Solution

The fourth proportional to 308.77, 426.10 and 168.89 is: 233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.77 : 426.10 = 168.89 : x
  2. Step 2: Convert to fraction form
    308.77/426.10 = 168.89/x
  3. Step 3: Cross multiply
    308.77x = 426.10 × 168.89
  4. Step 4: Simplify right side
    308.77x = 71,964.03
  5. Step 5: Solve for x
    x = 71,964.03/308.77
  6. Step 6: Final answer
    x = 233.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.